Which of the following would result in an increase in blood pressure?

Choice A reason: Decreased cardiac output would result in a decrease in blood pressure, not an increase. Cardiac output is the amount of blood pumped by the heart per minute. Choice B reason: Decreased vascular resistance would also result in a decrease in blood pressure, not an increase. Vascular resistance is the force that opposes the blood flow in the blood vessels. Choice C reason: Hypovolemia would also result in a decrease in blood pressure, not an increase. Hypovolemia is the condition of having low blood volume due to fluid loss or dehydration. Choice D reason: Vasoconstriction would result in an increase in blood pressure. Vasoconstriction is the narrowing of the blood vessels, which increases the vascular resistance and the blood pressure.